Means for the manufacture centrifugally, of pipes, coluhns, and other hollow articles



D-MOIF2 ET AL MEANS FGR THE- MANUFACTURE CENTRIFUGALLY, OF PIPES, COLUMNS, AND OTHER HOLLOW ARTICLES Flled July 24, 1923 s She'bs-Sheei 1 D. MOIR ET AL MEANS FOR THE MANUFACTURE CENTRIFUGALLY, OF PIPES,

Feb. 16, 1925.

OGLUDIENS, AND OTHER HOLLOW ARTICLE 3 Sheets-Sheet 2 Filed July 24, 1923 $4 1233. M3, 5925 v V 11,525,878

' D. MD? ET AL mums FOR THE MANUFACTURE, CENTRIFUGALLY, OF PIPES,

OLUMNS, AND OTHER HOLLOW ARTICLES Filed July 24, 1923, 3 Sheets-Sheet face of a pipe -whilst the mould l'ieing rotated the head 87' of the trough, Figs. 6, 7 and 9. is shown as provided with two guides to receive a T shaped member 89 upon a boss 90 equipped with three springy blades ill. The member 89 may be fitted with a cross pin 92 adapted to rest in curved seatings 0.) upon the guides 88 in order to hold the polisher in position but obviously this may be effected in other ways.

What we claim is:--

-1. In means of the kind herein referred to. a rotary -arrier having internal annular abutments distributed throughout its length,

said ahutments decreasing in diameter from one end of the carrier to the other and adapted to be engaged by longitudinal ribs forming a tapering guide arrangement external to a mould of a given dimension inserted lengthwise into the carrier, and means whereby said annular abutments can be radially built up to enable a smaller mould to be equivalently supported, said means comprising rings of varying external diameters correspondi g severally to the internal diameter of the main carrier abutments and collectively united by an external tapering sheet metal sleeve. the said sleeve being first inserted endwise into the carrier and the mould thereafter inserted endwise into the sleeve, substantially as described.

2. In means of the kind herein referred to: a rotary carrier having a series of annular abutments constituting an ,internal tapering support system, an auxiliary support system comprising rings and a uniting sleeve constituting an internally and externally tapering: structure adapted to be inserted endwise into the rotary carrier, a mould having longitud nal ribs constituting,

madam an external tapering structure adapted to be insertedendwisc in the same sense int the structure constituting the auxiliary sup port system, and a ring, adapted to be interlocked with the carrier by rotating; motion, adapted to hold both the mould and auxiliary sup-port system in position with in the carrier substantially as described.

3. In means of the kind herein referred to, a rotary carrier having a series of annular abutments constituting an internal tapering support system. anauxiliary support system comprising rings and a uniting sleeve constituting an internally and e ternally tapering structure adapted to be inserted endwise into the rotary carrier, a mould having longitudinal ribs constituting an external tapering structure adapted to be inserted endwise in the same sense into the structure constituting the auxiliary support system, a ring: adapted to be interlocked with the carrier by rotary motion. adapted to hold both the mould and auxiliary sup port system in position Within the carrier and a former adapted to be interlocked with the ring aforesaid by a rotary motion substantially as described.

4:. In means of the kind herein referred to. a trough having a head provided with guides and a trowelling device comprising spring" blades upon a boss having a T shaped member adapted to be engaged by the guides aforesaid.

Signed at Rosario. Argentina. by the said DONALD Morin this 5th day of Jnne- 1923.

DONALD MOIR.

Signed at London. England by the said;

HUGH BUCHANAJ. this th day, of April.

HUGH BUCHANAN. 

